The LA Auto Show, the largest on the US west coast, is typically the venue worldwide automakers showcase their latest green technologies. This year's exhibition is no different, with a slew of automakers touting environmentally-conscious vehicles powered by everything from turbines to batteries. But LA is also the stage for some relevant design exercises, including the Nissan Ellure concept, Cadillac's Urban Luxury concept, Hyundai Elantra, the Dodge Charger and Durango, Nissan's Quest minivan, the Ford Explorer, Subaru's Impreza concept and the new Saab 9-4X.